diff --git a/README.md b/README.md
index 7439c28..fdd61ee 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 Python package for building MODFLOW-based programs from source files.
 
-### Version 2.0.0.dev0
+### Version 2.1.0.dev0
 
 [![PyPI Version](https://img.shields.io/pypi/v/mfpymake.png)](https://pypi.python.org/pypi/mfpymake)
 [![Anaconda Version](https://anaconda.org/conda-forge/mfpymake/badges/version.svg)](https://anaconda.org/conda-forge/mfpymake)  
@@ -167,8 +167,8 @@ When using the pymake object (`Pymake()`) only the positional arguments
 import pymake
 
 pm = pymake.Pymake()
-pm.srcdir = '../src'
-pm.target = 'mf6'
+pm.srcdir = "../src"
+pm.target = "mf6"
 pm.include_subdirs = True
 pm.build()
 ```
diff --git a/docs/getting_started.md b/docs/getting_started.md
index d0d86cc..cf9f37c 100644
--- a/docs/getting_started.md
+++ b/docs/getting_started.md
@@ -133,8 +133,8 @@ When using the pymake object (`Pymake()`) only the positional arguments
 import pymake
 
 pm = pymake.Pymake()
-pm.srcdir = '../src'
-pm.target = 'mf6'
+pm.srcdir = "../src"
+pm.target = "mf6"
 pm.include_subdirs = True
 pm.build()
 ```
diff --git a/pixi.toml b/pixi.toml
index be4d9f4..af4fe78 100644
--- a/pixi.toml
+++ b/pixi.toml
@@ -2,7 +2,7 @@
 name = "pymake"
 channels = ["conda-forge"]
 platforms = ["win-64", "linux-64", "linux-aarch64", "osx-arm64"]
-version = "2.0.0.dev0"
+version = "2.1.0.dev0"
 
 [dependencies]
 appdirs = "*"
diff --git a/pymake/config.py b/pymake/config.py
index 968e0df..2f0c056 100644
--- a/pymake/config.py
+++ b/pymake/config.py
@@ -1,6 +1,6 @@
 __author__ = "Joseph D. Hughes"
-__date__ = "August 14, 2026"
-__version__ = "2.0.0.dev0"
+__date__ = "September 09, 2026"
+__version__ = "2.1.0.dev0"
 __maintainer__ = "Joseph D. Hughes"
 __email__ = "jdhughes@usgs.gov"
 __status__ = "Production"
diff --git a/pymake/plot/dependency_graphs.py b/pymake/plot/dependency_graphs.py
index 0c691bd..a73f1a1 100644
--- a/pymake/plot/dependency_graphs.py
+++ b/pymake/plot/dependency_graphs.py
@@ -38,7 +38,7 @@ def _check_pydot():
     if pydot is None:
         raise ImportError(
             "pydot is required to plot dependency graphs, install it with "
-            "'pip install mfpymake[plot]'"
+            "'pip install mfpymake[plot]' or 'conda install pydot graphviz'"
         )
 
 
diff --git a/version.txt b/version.txt
index 3ae7ea9..0ae98a3 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-2.0.0.dev0
\ No newline at end of file
+2.1.0.dev0
\ No newline at end of file